Same reason Al Gore only wanted re-counts in 5 counties in Florida and not the whole state. Same reason Hillary Clinton conceded despite have prepared election lawsuits.
Because the lead isn't really that tiny. She's ahead by a couple hundred votes. If he knows that the Democratic machine added 1,000, 5,000, or 10,000 votes; and he knows that he's basically out of money, and nothing has changed for the Democrats strategically at a federal or state level; dragging the election argument out risks exposing their operation. The risk just isn't worth the reward. They have the Senate, they won't get the house, so it's just not worth the danger.
Same reason Al Gore only wanted re-counts in 5 counties in Florida and not the whole state. Same reason Hillary Clinton conceded despite have prepared election lawsuits.
Because the lead isn't really that tiny. She's ahead by a couple hundred votes. If he knows that the Democratic machine added 1,000, 5,000, or 10,000 votes; and he knows that he's basically out of money, and nothing has changed for the Democrats strategically at a federal or state level; dragging the election argument out risks exposing their operation. The risk just isn't worth the reward. They have the Senate, they won't get the house, so it's just not worth the danger.